Method of embedding optical fiber in multilayer printed circuit board
First Claim
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1. A method of embedding at least one optical fiber in a multilayer printed circuit board, comprising the following steps of:
- a) providing a substrate consisting of a dielectric substrate layer having a conductive layer formed on one side thereof;
b) forming at least one groove for receiving the optical fiber on the dielectric substrate layer of the substrate;
c) coating an adhesive liquid at least on an inner surface of the groove;
d) inserting the optical fiber in the coated groove;
e) hardening the adhesive liquid coated on the inner surface of the groove, thereby securing the optical fiber into the groove to form an optical substrate; and
f) laminating at least one printed circuit board on each side of the optical substrate.
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Abstract
There is disclosed a method of embedding an optical fiber in the miltilayer printed circuit board without causing chemical or thermal damage to the optical fiber, in which a groove is formed on a substrate consisting of a dielectric substrate layer having a conductive layer formed on one side thereof, for example by a router bit process, the optical fiber is embedded in the groove using an adhesive liquid to give a optical substrate, and then at least one printed circuit board is laminated on and under the single optical substrate or the layered structure of two or more of the optical substrate.
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Citations
22 Claims
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1. A method of embedding at least one optical fiber in a multilayer printed circuit board, comprising the following steps of:
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a) providing a substrate consisting of a dielectric substrate layer having a conductive layer formed on one side thereof;
b) forming at least one groove for receiving the optical fiber on the dielectric substrate layer of the substrate;
c) coating an adhesive liquid at least on an inner surface of the groove;
d) inserting the optical fiber in the coated groove;
e) hardening the adhesive liquid coated on the inner surface of the groove, thereby securing the optical fiber into the groove to form an optical substrate; and
f) laminating at least one printed circuit board on each side of the optical substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of embedding at least one optical fiber in a multilayer printed circuit board, comprising the following steps of:
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a) providing a substrate consisting of a dielectric substrate layer having a conductive layer formed on one side thereof;
b) forming at least one groove for receiving the optical fiber on the dielectric substrate layer of the substrate;
c) coating an adhesive liquid at least on an inner surface of the groove;
d) inserting the optical fiber in the coated groove;
e) hardening the adhesive liquid coated on the inner surface of the groove, thereby securing the optical fiber into the groove to form an optical substrate;
f) layering two or more of the optical substrate by use of a dielectric adhesive layer, said dielectric adhesive layer being interposed between said optical substrates to give a layered structure of the optical substrates; and
g) laminating at least one printed circuit board on each side of the resulting layered structure. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification